A case report of perivascular epithelioid cell tumor of the lung: A benign tumor with intense FDG uptake

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  • Miyamoto Naoki
    Department of Thoracic, Endocrine Surgery and Oncology, The University of Tokushima Graduate School
  • Kawakita Naoya
    Department of Thoracic, Endocrine Surgery and Oncology, The University of Tokushima Graduate School
  • Sawada Toru
    Department of Thoracic, Endocrine Surgery and Oncology, The University of Tokushima Graduate School
  • Toba Hiroaki
    Department of Thoracic, Endocrine Surgery and Oncology, The University of Tokushima Graduate School
  • Yoshida Mitsuteru
    Department of Thoracic, Endocrine Surgery and Oncology, The University of Tokushima Graduate School
  • Takizawa Hiromitsu
    Department of Thoracic, Endocrine Surgery and Oncology, The University of Tokushima Graduate School

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  • FDG-PET/CT陽性を示した肺原発良性血管周囲類上皮細胞腫瘍の1例

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<p>The patient was a 36-year-old who was undergoing follow-up observation after a mediastinal mass was identified during a physical examination at a local clinic 3 years earlier. Over time, the mass showed a tendency to grow, and so the subject consulted our hospital for close examination and treatment. Chest CT revealed a mass shadow of 36 mm in the left middle mediastinum, and FDG-PET/CT revealed FDG uptake with an SUVmax of 4.93 at the same site. On suspicion of a mediastinal tumor such as a thymoma, video-assisted thoracoscopic surgery was performed; however, the lesion was a sessile intrapulmonary tumor. Rapid pathological diagnosis revealed low-grade malignancy, and left upper segmentectomy was performed. The postoperative pathology results led to the diagnosis of a benign perivascular epithelioid cell tumor (PEComa). PEComa is a rare condition, for which there are very few reports using PET/CT. We report a case of benign PEComa that showed elevated FDG uptake.</p>

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